Test 2 Heart Vocab Flashcards
the region of the thoracic cavity between the lungs
mediastinum
pointed area of the heart directed toward the left hip
apex
broader posterosuperior aspect where the great vessels of the body emerge
base
layers that envelop the heart
pericarduim
serous membrane that tightly hugs the external surface of the heart and is part of the heart wall
epicardium
cardiac muscle layer of the heart wall
myocardium
the endothelial membrane lining the interior of the heart
endocardium
severe, suffocating chest pain caused by a brief lack of oxygen supply to the heart muscle
angina pectoris
a condition when there are dead tissue areas of the myocardium caused by an interruption of blood supply to the heart
myocardial infarction
sets basic rhythm, composed of special tissue causes heart muscle depolarization from atria to ventricles
intrinsic conduction system (nodal system)
mass of specialized myocardial cells in the wall of the right atrium, pacemaker of the heart
sinoatrial noda (SA node)
local decrease in blood supplu
ischemia
irregular, uncoordinated contraction of muscle cells particularly of the heart musculature
fibrilation
abnormal, excessively rapid heart rate, over 100 bpm
tachycardia
slow heart beat usually defined as a rate under 60 bpm
bradychardia
the contraction rate of heart activity
systole
a period between contractions of relaxation of the heart during which it fills with blood
diastole
lub
caused by closing of the AV valve
dub
when semilunar valves close at the end of systole
condition in which the pumping efficiency of the heart is depressed so that circulation is inadequate to meet tissue needs
CHF congestive heart failure
the rhythmic expansion and recoil of arteries, resulting from heart contraction, can be felt from outside of the body
pulse
points that are compressed to stop blood flow into distal tissues during hemorrhage
pressure points
the pressure blood exerts against its inner wall of the blood vessels and is the force that keeps blood continuously circulation
blood pressure
systolic pressure
pressure in the arteries at the peak of ventricular contraction
diastolic pressure
pressure when the ventricles are relaxing
used to measure blood pressure in the brachial artery of the arm
ausculatory method
low blood pressure
hypotension
abnormally high blood pressure
hypertension
clogging up of the coronary arteries due to fatty tissue build up
artherosclerosis
irritation and swelling of the mucous membrane in the nose
rhinitis
a condition in which the cavities around the nasal passages are inflamed
sinusitis
what is the heimlich maneuver
a first-aid procedure for dislodging an obstruction from a persons windpipe in which a sudden strong pressure is applied to the abdomen, between the navel and rib cage
an incision in the windpipe (trachea) to relieve an obstruction to breathing
tracheostomy
releasing air from the lungs through the nose or mouth
expiration
listen to the heart
ausculate
touching to medically evaluate
palpate